Subsequent works considered either benchmarks that respect the constraints for short time windows [1]}; dynamic benchmarks \(\lbrace x_t^\star \rbrace \)  that satisfy separately each \(t\) -round constraint \(g_t(x_t^\star )\!\preceq \! 0\)  [2]}, [3]}; or benchmarks [4]}, [5]} restricted in set:
\(\mathcal {X}_T=\left\lbrace x\in \mathcal {X}\, \Big \vert \, g_t(x)\preceq 0,\,\forall t\le T \right\rbrace . \) 
